EP 1793557 A1 20070606 - Adaptive delayed ACK switching for TCP applications
Title (en)
Adaptive delayed ACK switching for TCP applications
Title (de)
Adaptive verzögerte ACK-Schaltung für TCP-Anwendungen
Title (fr)
Commutation adaptative ACK retardée pour applications TCP
Publication
Application
Priority
- EP 03029181 A 20031218
- US 32399302 A 20021220
Abstract (en)
A device of a communication network system arranged to transport TCP/IP packets, in which said device is arranged to use a delayed acknowledgment procedure of TCP and comprises a unit for receiving TCP packets; a unit for monitoring a burstiness of received TCP packets transmitted from an entity of the communication network system; a unit for deciding whether the monitored burstiness meets a predefined condition; and a control unit for disabling the delayed acknowledgment procedure or for enabling the delayed acknowledgment procedure on the basis of the decision result made by the deciding unit, characterized in that the monitoring unit comprises means for measuring an interarrival time of the received TCP packets for calculating the burstiness therefrom, in which the measuring means is arranged to measure consecutive interarrival times, and the monitoring unit further comprises means for measuring a round trip time cycle for calculating the burstiness from the measured interarrival times and the round trip time cycle, and in which the monitoring unit further comprises means for determining the largest interarrival time T 2 and the second largest interarrival time T 3 out of the measured interarrival times during one round trip time cycle, and in which the decision unit is arranged to decide that the burstiness is low when the condition X 3 *T 3 < T 2 is met, with X 3 being an adjustable parameter, and as a result the delayed acknowledgment procedure is enabled by the control unit when it has been in a disabled state.
IPC 8 full level
H04L 29/06 (2006.01); H04L 12/56 (2006.01)
CPC (source: EP US)
H04L 1/1854 (2013.01 - EP US); H04L 9/40 (2022.05 - US); H04L 47/193 (2013.01 - EP US); H04L 47/323 (2013.01 - EP US); H04L 69/163 (2013.01 - EP US); H04L 69/16 (2013.01 - EP US)
Citation (search report)
- [A] EP 1052797 A2 20001115 - KENT RIDGE DIGITAL LABS [SG]
- [A] US 2002159396 A1 20021031 - CARLSON DAVID G [US], et al
- [A] WO 9904536 A2 19990128 - NOKIA TELECOMMUNICATIONS OY [FI], et al
- [A] ALLMAN M: "ON THE GENERATIONNAND USE OF TCP ACKNOWLEDGMENTS", COMPUTER COMMUNICATION REVIEW, ACM, NEW YORK, NY, US, vol. 28, no. 5, October 1998 (1998-10-01), pages 4 - 21, XP000914449, ISSN: 0146-4833
- [A] STEVENS W: "TCP Slow Start, Congestion Avoidance, Fast Retransmit and Fast Recovery Algorithms", INTERNET CITATION, January 1997 (1997-01-01), XP002227655, Retrieved from the Internet <URL:http://www.faqs.org/ftp/rfc/pdf/rfc2001.txt.pdf> [retrieved on 20030117]
- [A] BALAKRISHNAN H ET AL: "THE EFFECTS OF ASYMMETRY ON TCP PERFORMANCE", MOBICOM. PROCEEDINGS OF THE ANNUAL INTERNATIONAL CONFERENCE ON MOBILE COMPUTING AND NETWORKING, September 1997 (1997-09-01), pages 1 - 13, XP002919914
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
Designated extension state (EPC)
AL LT LV MK
DOCDB simple family (publication)
EP 1432207 A2 20040623; EP 1432207 A3 20050209; EP 1432207 B1 20070502; AT E361625 T1 20070515; AT E403326 T1 20080815; DE 60313568 D1 20070614; DE 60313568 T2 20071227; DE 60322608 D1 20080911; EP 1793557 A1 20070606; EP 1793557 B1 20080730; US 2004122969 A1 20040624; US 7225266 B2 20070529
DOCDB simple family (application)
EP 03029181 A 20031218; AT 03029181 T 20031218; AT 07103578 T 20031218; DE 60313568 T 20031218; DE 60322608 T 20031218; EP 07103578 A 20031218; US 32399302 A 20021220